Earth-shaking noise from the air in Salem, ORAt around 11:00am on 11/11/2016 I was standing in my kitchen about to put something in my microwave when suddenly a sound like a very large aircraft sounded directly above my house. The noise rumbled through the house. I am a private pilot and it did not sound like any normal aircraft. The weather here was in thick fog so there was no way to see what could have moved so fast and without the sound of jet engines. I actually though a plane was descending fast and about to crash. The noise came and went so fast. There was neither an approaching nor a trailing sound.It was definitely above the house. My house sits about 500' above sea level and my thought was that the craft was far below legal limits.A few minutes later I heard what sounded like military aircraft above the fog seeming to move northward and a couple of minutes later I again heard a military sounding craft streaking above the fog - it is most unusual to have military aircraft except for the Reserve helicopters that sometimes fly in the area out of McNary Field here in Salem, Oregon. Sent from my iPhone